package DesignPattern.Behavior.Interpreter;

public class Minus extends AbstractExpression {
    // -左边的表达式
    private AbstractExpression left;
    // -右边的表达式
    private AbstractExpression right;

    public Minus(AbstractExpression left, AbstractExpression right) {
        this.left = left;
        this.right = right;
    }

    @Override
    public int interpret(Context context) {
        return left.interpret(context) - right.interpret(context);
    }

    @Override
    public String toString() {
        return "(" + left.toString() + "-" + right.toString() + ')';
    }
}
